Genetic Epidemiology of CVD Risk Factors

This study has been completed.
Sponsor:
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)
ClinicalTrials.gov Identifier:
NCT00053521
First received: January 30, 2003
Last updated: January 24, 2008
Last verified: January 2008
  Purpose

To determine the role of genetic factors influencing risk factors for cardiovascular disease, ultimately identifying specific genes influencing the age-related progression of cardiovascular disease risks.


Condition
Cardiovascular Diseases
Heart Diseases

Study Type: Observational

Resource links provided by NLM:


Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date: January 2003
Study Completion Date: November 2007
Primary Completion Date: November 2007 (Final data collection date for primary outcome measure)
Detailed Description:

BACKGROUND:

Understanding the genetic basis of common multifactorial diseases such as cardiovascular disease (CVD) remains an elusive goal, but the great advances in molecular genetic technology, statistical genetic methods, and phenotypic assessment of CVD risk factors in recent years have facilitated more sophisticated genetic studies of risks for heart disease.

The study is a follow-up to one conducted in the 1970's and 1980's. The availability of 5 large kindreds first identified and recruited as part of the "High Blood Pressure in the Young" program is an important resource. The investigators have an extensive array of baseline data that was collected in the late 1970's and early 1980's on 750 participants stemming from that project, although some data are available only on a subset of participants. The present study population centers on 764 individuals in five large, multigenerational, extended families (four white and one African-American) originally examined 25 years ago. Data collected from the original participants include hundreds of biochemical, medical, physiological, behavioral, physical, psychological, genetic and demographic traits.

DESIGN NARRATIVE:

The study consists of four specific aims: 1) Collect 25-year follow-up data from approximately 500 of the original participants, and new data from approximately 500 of their relatives not examined in the original study. The cardiovascular disease risk factor phenotypes to be collected include hemodynamic measures, carotid intima-media thickness, and measures of cardiopulmonary function. 2) Obtain DNA samples from these 1,000 individuals and use modern high-throughput molecular genotyping methods to create a 10 cM genetic marker map. 3) Quantify and characterize the nature of genetic influences on CVD risk factors using quantitative genetic methods suited for cross-sectional and serial (follow-up) data from relatives in large extended families. 4) Conduct linkage analyses to identify chromosomal regions (QTLs) harboring genes that influence individual variation in cardiovascular disease risk factors. Following these linkage analyses, the investigators will examine more closely the strongest linkage signals with fine mapping linkage analysis in order to narrow chromosomal regions of interest. The study is a collaboration between Wright State University and the Southwest Foundation for Biomedical Research.

  Eligibility

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

No eligibility criteria

  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00053521

Sponsors and Collaborators
Investigators
Investigator: Shelley Cole Southwest Foundation for Biomedical Research
Investigator: Roger Siervogel Wright State University
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00053521     History of Changes
Other Study ID Numbers: 1206
Study First Received: January 30, 2003
Last Updated: January 24, 2008
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases

ClinicalTrials.gov processed this record on August 01, 2014